Surface-Mount Blinker
author: AVB
2 layer board of 0.52 x 1.52 inches (13.1 x 38.5 mm)
Uploaded:
August 12, 2016
Shared:
October 10, 2016
Total Price:
$3.90
A simple “astable multivibrator” circuit designed for testing SMD stencil techniques and SMD soldering techniques. Requires two transistors (ST2222 or equivalent, SOT-23,) two LEDs (0805,) two capacitors (0603,) and four resistors (also 0603.) Touch 9V battery to exposed pads on opposite side to test assembled circuit.
Using 1uF capacitors, 1k resistors, and 1M resistors, the LEDs blink rapidly, but not rapidly enough to call it flickering.
Two-layer board. Designed with KiCAD.
A simple “astable multivibrator” circuit designed for testing SMD stencil techniques and SMD soldering techniques. Requires two transistors (ST2222 or equivalent, SOT-23,) two LEDs (0805,) two capacitors (0603,) and four resistors (also 0603.) Touch 9V battery to exposed pads on opposite side to test assembled circuit.
Using 1uF capacitors, 1k resistors, and 1M resistors, the LEDs blink rapidly, but not rapidly enough to call it flickering.
Two-layer board. Designed with KiCAD.
